A Chicago police officer has been relieved of his police powers after being accused of breaking a senior citizen's hip when the officer shoved the man during an argument earlier this month.

David Barrett, a 20-year veteran of the Chicago Police Department, was ordered held in lieu of $10,000 bond on Saturday on a charged of aggravated battery.

The incident happened while Barrett was off-duty Dec. 12 at a Shell gas station, 10601 S. Cicero Ave. in south suburban Oak Lawn, according to court records and prosecutors.

Frustrated with a gas pump, Barrett went into the station and began screaming at the attendant, according to prosecutors. The 89-year-old man, who was standing in line with Barrett, told him to calm down, at which point Barrett pushed the senior citizen to the ground, prosecutors said.

The 89-year-old man broke his right hip and had to undergo surgery, according to court records. He also tore his right rotator cuff, a group of tendons and muscles in the shoulder.

Stuart Goldberg, Barrett's attorney, disputed that account in a bond hearing, arguing the 89-year-old man attacked Barrett first. Goldberg has asked that recorded tape of the incident be preserved.